A mother comforts her baby in an area where she and her family have taken shelter after fleeing their village turned battlefield in Syria's Idlib province on Sunday, September 22. More than 100,000 people reportedly have been killed in Syria since a popular uprising spiraled into a civil war in 2011. Syria has agreed to a Russian-U.S. timeline for the removal of its chemical weapons, but the plan has to be sanctioned as a U.N. resolution. Click through to view the most compelling images taken since the start of the conflict:
Oncupinar Border Crossing, Turkey (CNN) -- Al Qaeda-linked militants were on the verge of capturing a strategic border gate between Turkey and opposition-controlled northern Syria late Wednesday night.
Hardline Islamist fighters from the Islamic State of Iraq and Syria (ISIS) made their advance toward the Turkish border hours after they attacked and pushed more moderate Syrian rebels out of the nearby Syrian town of Azaz.
"We are trying to bring reinforcements to make sure that the border crossing is not lost to the ISIS," said Abu Rashid, a commander from the Northern Storm Brigade, a rebel contingent from the opposition Free Syrian Army.
That rebel faction has controlled Azaz and the Syrian side of the Oncupinar-Bab el Salama border crossing with Turkey for the past year after it wrested control of the town from the government of Bashar al-Assad.
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The fighting erupted first erupted in Azaz between FSA rebels and ISIS militants on Wednesday afternoon.
The clashes raised tensions on the Turkish side of the border as convoys of ambulances raced back and forth through the border gate and large numbers of Turkish border guards and plain-clothed security personnel deployed throughout the customs terminal, prohibiting journalists from filming the commotion.
The advance of the jihadist fighters threatens the main entry point for international aid on the main highway linking the Turkish city of Gaziantep and the divided Syrian northern metropolis of Aleppo.
In recent months, deliveries of U.S. humanitarian and nonlethal assistance to the opposition-held north have been trucked through the Bab el Salama gate. This was also the border crossing used by U.S. Sen. John McCain when he made a brief surprise visit to Syria to meet the commander of the Free Syrian Army.
During Wednesday's battle between the rival opposition groups in Azaz, a prominent opposition activist named Omar Hajouleh was shot dead by a sniper from ISIS, his brother said. Hajouleh was the head of the Azaz Media Center, a rebel-affiliated group that has long facilitated visits for foreign journalists to northern Syria.
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"These guys (ISIS) are infidels. They killed my brother and wounded my other brother," said Hajouleh's older brother, Khaled, who wept as he spoke to CNN.
The elder Hajouleh said he had previously helped facilitate the arrival of foreign jihadist fighters from Turkey, some of whom volunteered to fight with the hardline ISIS militia in Syria.
"I let these guys in, and I totally regret it," said Khaled Hajouleh. "I thought these guys were coming to help us and protect us."
The apparent power play at the border by ISIS, one of the newest and most ideologically extreme jihadist groups to have established itself in Syria, immediately triggered calls for vengeance from the more moderate Free Syrian Army.
"[ISIS] are not rebels anymore; from this point, they are terrorists now," said Louay Almokdad, the political and media coordinator for the FSA, said in an interview broadcast live on CNN.
"We are fighting two terrorist teams on two fronts; one al-Assad regime and Hezbollah militia and the Iranian revolutionary guards and the other the extremists al Qaeda, ISIS," Almokdad added.
Until recently, there had been cooperation between the two groups.
Last month, ISIS' al Qaeda-linked fighters fought alongside the FSA to capture a long-besieged Syrian government airbase that's less than 20 minutes' drive from the Turkish border.
Government troops barricaded inside Minnigh Airbase had succeeded in holding out for months against the rebel siege. Their defenses finally collapsed on August 5, after an ISIS suicide bomber drove a captured armored personnel carrier loaded with explosives to the gates of the airbase and then detonated the huge mobile bomb.
The stated goal of ISIS is to establish an Islamic caliphate uniting Iraq and Syria. The group includes many foreign militants hailing from North Africa, Iraq, Lebanon, Turkey and other countries.
Eyewitnesses say some of the fighters wear suicide bomb belts as part of their daily uniform.
U.N. chemical weapons inspectors to return to Syria
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A man checks an AK-47 at his gun shop in Aleppo, Syria, on Saturday, September 21.
Free Syrian Army fighters take cover moments after firing a rocket toward government forces in the Idlib province of northern Syria on Friday, September 20.
Free Syrian Army fighters take cover during clashes with government forces in Idlib province on September 20.
Rebel fighters inspect a stairwell amid fighting against Syrian government forces on Thursday, September 19, in the Saif al-Dawla district of Aleppo, Syria.
A Syrian child sits in a village in the Idlib province countryside on Septeptember 19.
Opposition fighters react after returning from the battlefield in the Idlib province countryside on September 19.
Smoke rises after a bomb was thrown from a helicopter, hitting a rebel position during heavy fighting between troops loyal to Syrian President Bashar al-Assad and opposition fighters in the Idlib province on September 19.
A Syrian opposition fighter watches as heavy fighting erupts in the neighboring village of Kafr Nabuda in the Idlib province on September 19.
Rebel fighters aim their weapons during fighting against Syrian government forces on September 19 in the Saif al-Dawla district of Aleppo.
Rebel fighters duck behind a barricade from firing in Aleppo on Wednesday, September 18.
AFP reporter Sammy Ketz hits the ground as a Syrian soldier runs past during sniper fire in Maalula on September 18. Ketz and a photographer were reporting on the ancient Christian Syrian town northeast of Damascus.
A Syrian opposition fighter takes a break on a mountain near a rebel camp in Idlib province on September 18.
A Free Syrian Army fighter rests inside a cave at a rebel camp in Idlib province on Tuesday, September 17.
Rebels gather on a square in Damascus' Shebaa district on September 17.
Volunteers wear protective gear to show a class how to respond to a chemical attack in Aleppo, Syria, on September 15. For two months, Mohammad Zayed, an Aleppo University student, has been training a group of 26 civilians to respond to a chemical attack.
Syria's pro-Assad militia rest near Maalula, Syria, on Friday, September 13.
Pro-Assad soldiers leave a checkpoint that they control in Maalula, Syria, on September 13.
Syrian soldiers take aim at rebel fighters positioned in the mountains of the Christian town of Maalula on September 13.
Rebels parade at a former military academy north of Aleppo during a September 13 ceremony to mark an agreement to unite two rebel brigade forces.
A fighter of the Popular Front for the Liberation of Palestine General Command squats next to the covered body of an alleged foreign rebel fighter in the Yarmouk refugee camp in the Syrian capital of Damascus on Thursday, September 12.
An opposition fighter runs in front of a sniper curtain in the industrial area of Deir Ezzor, Syria, during clashes with regime forces on September 12.
A sheet hangs across an alley way to shield fighters from sniper fire as a fighter of the Popular Front for the Liberation of Palestine General Command walks past destroyed buildings in the Yarmouk refugee camp in Damascus, Syria, on September 12.
A Syrian pro-government soldier aims his rifle as he patrols the streets of the Christian town of Maalula on Wednesday, September 11.
A Free Syrian Army fighter stands guard inside a damaged house in Aleppo's Qastal al-Harami neighborhood on September 11.
Free Syrian Army fighters climb a flight of stairs to take positions near the Hanano barracks on September 11.
A Syrian government tank is seen during clashes with Free Syrian Army fighters in Maaloula, Syria, on September 11.
A funeral is held on September 11 for three Christian Syrians killed during battles with an al Qaeda-linked rebel group that took control of the historic Christian town of Maaloula from regime forces during the weekend.
A man walks through a destroyed residential area of Saraqib, Syria, on Monday, September 9, following repeated airstrikes by government forces.
A soldier wears a picture of Syrian President Bashar al-Assad on his chest while at a market in old Damascus on September 8.
A Free Syrian Army fighter prays in a trench in the Damascus suburbs on September 8.
A Free Syrian Army fighter takes up a shooting position in Aleppo on September 8.
A Free Syrian Army fighter runs for cover in Raqqa province on September 8.
Buildings are heavily damaged in the Salah al-Din area of Aleppo on September 8.
Issa fixes a mortar launcher in the Aleppo weapons factory on September 7.
A bedroom lies in ruins after clashes between government forces and rebels around Ariha on September 7.
Rebels prepare explosive devices for fighting with government forces on September 7 in Deir Ezzor.
Syrian forces are seen in the Syrian Christian town of Maaloula on September 7.
A Syrian soldier prepares large-caliber bullets for a machine gun in Maaloula on September 7.
A man stands inside a home damaged by heavy shelling in Arbeen, a suburb of Damascus, Syria, on September 7.
Men gather on the remains of a destroyed building after reported airstrikes by Syrian government forces in the rebel-held northwestern Syrian province of Idlib on Thursday, September 5.
Men observe the wreckage of a motorbike in the Syrian province of Idlib on September 5. The Syrian Observatory for Human Rights watchdog said that Syrian war planes bombed rebel-held areas in Idlib, Aleppo, Hama and Lattakia.
A Free Syrian Army fighter looks through a hole from behind sandbags, while a fellow fighter reads the Quran in Deir Ezzor, Syria, on Tuesday, September 3. The United States and other Western nations blame the Assad regime for a chemical weapons attack that's believed to have killed more than 1,400 people.
A Free Syrian Army fighter takes cover as he watches forces loyal to President Bashar al-Assad near Hanano barracks in Aleppo on September 3.
A Free Syrian Army fighter is seen through a hole in a wall of a building in Aleppo on September 3.
Free Syrian Army fighters walk inside a damaged house in Aleppo on September 3.
A Free Syrian Army fighter walks through a hole in a wall in Aleppo on September 3.
Free Syrian Army fighters talk inside a burnt house in Aleppo on September 3.
A Free Syrian Army fighter peeks through the curtains of a bedroom in Deir ez-Zor, Syria, on Monday, September 2.
Free Syrian Army fighters take their positions behind piled sandbags, as one of them points his weapon, in Deir ez-Zor on September 2.
A rebel fighter points his weapon at Syrian regime forces in Deir ez-Zor on September 2.
Syrian firefighters try to extinguish a fire after a missile hit a residential building in Damascus, Syria, on September 2.
A U.N. arms expert collects samples during an inspection of a suspected chemical weapons strike site in the Ghouta area outside Damascus on August 29.
People search for belongings in rubble in Raqqa, Syria, on August 29.
Free Syrian Army fighters launch a rocket toward forces loyal to Syrian President Bashar al-Assad in Deir Ezzor on August 29.
A Syrian Kurd uses hay to hide another woman in a training session organized by the Kurdish Women's Defense Units on Wednesday, August 28, in a northern Syrian border village. They're preparing if the area comes under attack.
Free Syrian Army fighters escort U.N. vehicles with chemical weapons experts on August 28 through a site of a suspected chemical weapons attack outside Damascus.
A Free Syrian Army fighter takes position behind sandbags in the old city of Aleppo, Syria, on Tuesday, August 27.
A U.N. team leaves its Damascus, Syria, hotel in a convoy on Monday, August 26. The team was to investigate an alleged chemical attack that killed hundreds last week in a suburb of the Syrian capital. Sniper fire hit a vehicle used by the U.N. chemical weapons investigation team multiple times Monday, according to the United Nations.
A Syrian soldier walks down a street in Damascus on Saturday, August 24.
Pigeons lie dead on the ground on August 24 from after what activists say is the use of chemical weapons by government forces in the Damascus suburb of Arbeen.
Columns of smoke rise in Barzeh after heavy shelling on Friday, August 23.
A young Free Syrian Army fighter is reflected in a mirror as he takes position in a house in Aleppo on Thursday, August 22.
Rebels move around a building in Aleppo on August 22.
Syrian rebels claim pro-government forces used chemical weapons to kill citizens outside Damascus on Wednesday, August 21. People inspect bodies in this photo released by the Syrian opposition Shaam News Network.
People search the rubble of a bombed building in Aleppo, Syria, on Friday, August 16.
Men bury the bodies of six members of the same family killed in a bombing in Raqqa on Saturday, August 10.
Syrian Army soldiers patrol a devastated street in Homs on Wednesday, July 31.
Free Syrian Army fighters move through a hole in a wall in Khan al-Assal on Monday, July 22, after seizing the town.
A rebel fighter walks past swings in a deserted playground in Deir al-Zor, Syria, on Sunday, July 21.
A rebel fighter speaks with a fellow fighter through a hole in a wall in Deir al-Zor on July 21.
A Free Syrian Army fighter casts a shadow on a wall as he carries his weapon in a shelter in Deir al-Zor on Thursday, July 18.
Yahya Sweed, 13, is comforted by his father as he lies on a bed in Kfar Nubul on Tuesday, July 16. The boy was injured by shrapnel, resulting in the amputation of his right leg.
A rebel fighter naps in a trench about 300 feet from the Syrian government forces' positions along the highway connecting Idlib with Latakia on Monday, July 15.
A rebel fighter uses a hole in the wall of a destroyed school to aim at Syrian government forces in the Izaa district of Aleppo on Sunday, July 14.
A Free Syrian Army fighter uses a mirror to scope out snipers loyal to Syrian President Bashar al-Assad in Aleppo on Friday, July 12.
A Free Syrian Army fighter stands over a boy who was injured during shelling in Al-Bara on Monday, July 8.
Members of the Free Syrian Army fire a homemade rocket toward regime forces in Deir al-Zor on Sunday, June 16.
Syrian rebels leave their position in the northwestern town of Maaret al-Numan on Thursday, June 13. The White House said that 
Forces loyal to Syrian President Bashar al-Assad are seen near Qusayr on Thursday, May 30.
Syrian rebels take position in a house during clashes with regime forces in the old city of Aleppo on May 22.
Syrian army soldiers take control of the village of Western Dumayna north of the rebel-held city of Qusayr on Monday, May 13. Syrian troops captured three villages in Homs province, allowing them to cut supply lines to rebels inside Qusayr town, a military officer told AFP.
Rebel fighters fire at government forces in the northern Syrian city of Aleppo on Sunday, May 12.
Searchers use a flashlight as they look for survivors among the rubble created by what activists say was a missile attack from the Syrian regime, in Raqqa province, Syria, on April 25.
A Kurdish fighter from the "Popular Protection Units" (YPG) takes position inside a building in the majority-Kurdish Sheikh Maqsood area of Aleppo, on Apri. 21.
People walk past destroyed houses in the northern Syrian town of Azaz on Sunday, April 21.
Free Syrian Army fighters take positions prior to an offensive against government forces in the Khan al-Assal area, near Aleppo on Saturday, April 20.
Men inspect damage at a house destroyed in an airstrike in Aleppo on April 15.
Syrian and Kurdish rebel fighters walk in the Sheikh Maqsud district of Aleppo on April 14.
A female rebel monitors the movement of Syrian government forces in Aleppo's Sheikh Maqsud neighborhood on Thursday, April 11.
A rebel runs to avoid sniper fire from Syrian government forces in Aleppo on April 11.
Syrian rebels observe the movement of Syrian government forces around Al-Kendi hospital in Aleppo on Wednesday, April 10.
Rescue teams and security forces check out the scene of a deadly car bomb explosion in Damascus on April 8.
The fighting has taken a toll on buildings in Aleppo's Saladin district, seen here on April 8.
A Syrian rebel runs for cover in Deir ez-Zor on April 2.
A rebel checks for snipers across the street toward the Citadel in Aleppo, Syria, on Saturday, March 30, in this photo taken by iReporter Lee Harper.
A Free Syrian fighter mourns the death of a friend in Aleppo on March 30, in this photo taken by iReporter Lee Harper.
A Syrian opposition fighter runs for cover from Syrian army snipers in Aleppo on Wednesday, March 27.
A Syrian girl covers her face to protect herself from fumes as a street covered with uncollected garbage is fumigated in Aleppo on Sunday, March 24.
A Syrian man and his family drive past damaged buildings in Maarat al-Numan, on Wednesday, March 20.
Syrians carry the body of a Syrian army soldier during a funeral ceremony in Idlib province on Tuesday, March 19.
Syrian rebels take position in Aleppo, the largest city in the country, on March 11.
Syrian men search for their relatives amongst the bodies of civilians executed and dumped in the Quweiq River on March 11.
A Free Syrian Army fighter looks back as smoke rises during fighting between rebel fighters and forces loyal to Syria's President Bashar al-Assad on the outskirts of Aleppo on Saturday, March 2.
Residents read Shaam News newspapers published by the Free Syrian Army in Aleppo on March 2.
A member of the Free Syrian Army reacts to the death of a comrade who was killed in fighting, at Bustan al Qasr cemetery in Aleppo on Friday, March 1.
A rebel fighter throws a home-made grenade at Syrian government forces in Aleppo on February 16.
A member of the Free Syrian Army stands with his weapon as he looks at a rainbow in Aleppo on February 16.
A Syrian woman looks through a bus window in Aleppo on February 14.
Free Syrian Army fighters walk through a dust-filled stairwell in Damascus on February 7.
A Syrian rebel gestures at comrades from inside a broken armored personnel carrier in Al-Yaqubia on February 6.
A rebel fighter throws a hand grenade inside a Syrian Army base in Damascus on February 3.
People stand in the dust of a building destroyed in an airstrike in Aleppo, Syria on February 3.
Free Syrian Army fighters run as they enter a Syrian Army base during heavy fighting in the Arabeen neighborhood of Damascus on February 3.
An unexploded mortar shell fired by the Syrian Army sits lodged in the ground in Damascus on January 25.
Fighters from Fateh al Sham unit of the Free Syrian Army fire on Syrian Army soldiers at a check point in Damascus on January 20.
A Free Syrian Army fighter walks between buildings damaged during Syrian Air Force strikes in Damascus on January 19.
A Syrian rebel fighter tries to locate a government jet fighter in Aleppo on January 18.
Syrian rebels launch a missile near the Abu Baker brigade in Albab on January 16.
A Syrian boy walks near rubbish next to tents at a refugee camp near the northern city of Azaz on the Syria-Turkey border, on January 8.
Syrians look for survivors amid the rubble of a building targeted by a missile in Aleppo on January 7.
A father reacts after hearing of a shelling by forces loyal to Syria's President Bashar al-Assad in Aleppo on January 3.
A patient smokes a cigarette at Dar Al-Ajaza psychiatric hospital in Aleppo on December 18, 2012. The psychiatric ward, housing around 60 patients, has lacked the means to function properly since fighting broke out there in July.
Syrians mourn a fallen rebel fighter at a rebel base in the al-Fardos area of Aleppo on December 8, 2012.
Members of Liwa (Brigade) Salahadin, a Kurdish military unit fighting alongside rebel fighters, monitor the area in the besieged district of Karmel al-Jabl in Aleppo on December 6, 2012.
A member of Liwa Salahadin aims at a regime fighter in the besieged district of Karmel al-Jabl in Aleppo on December 6, 2012.
Two young boys sit underneath a washline in a refugee camp on the border between Syria and Turkey near Azaz on December 5, 2012.
The bodies of three children, who were allegedly killed in a mortar shell attack that landed close to a bakery in Aleppo, on December 2, 2012, are laid out for identification by family members at a makeshift hospital at an undisclosed location of the city.
Smoke rises in the Hanano and Bustan al-Basha districts in Aleppo on December 1, 2012 as fighting continues through the night.
Damaged houses in Aleppo are seen after an airstrike on November 29, 2012.
A Syrian rebel mourns the death of a comrade in Maraat al-Numan on November 20, 2012.
Syrians protesters stand on Assad's portrait during an anti-regime demonstration in Aleppo on November 16, 2012.
A Syrian rebel takes cover during fighting against Syrian government forces in Aleppo on November 15, 2012.
Syrian opposition fighter Bazel Araj, 19, sleeps next to his pistol in Aleppo on November 11, 2012.
A rebel fighter fires at a Syrian government position in Aleppo on November 6, 2012.
A Syrian rebel leaps over debris left in the street while running across a "sniper alley" near the Salahudeen district in Aleppo on November 4, 2012.
Rebels hold their position in the midst of a battle on November 3, 2012 in Aleppo.
A man cries while being treated in a local hospital in a rebel-controlled area of Aleppo on October 31, 2012.
A man is treated for wounds after a government jet attacked the Karm al-Aser neighborhood in eastern Aleppo on October 31, 2012.
A Syrian rebel interrogates a handcuffed and blindfolded man suspected of being a pro-regime militiaman in Aleppo on October 26, 2012.
Smoke rises from a fuel station following a mortar attack as Syrian women walk on a rainy day in the Arqub neighborhood of Aleppo on October 25, 2012.
A Syrian rebel fires at an army position in the Karm al-Jabal district of Aleppo on October 22, 2012.
A wounded Syrian boy sits on the back of a truck carrying victims and wounded people to a hospital following an attack by regime forces in Aleppo on October 21, 2012.
A man lies on the ground after being shot by a sniper for a second time as he waits to be rescued by members of the Al-Baraa Bin Malek Battalion, part of the Free Syria Army's Al-Fatah brigade, in Aleppo on October 20, 2012.
Syrian army soldiers run for cover during clashes with rebel fighters at Karam al-Jabal neighborhood of Aleppo on October 20, 2012.
Smoke rises after a Syrian Air Force fighter jet fired missiles at the suburbs of the northern province of Idlib on October 16, 2012.
A Syrian opposition fighter stands near a post in Aleppo on October 11, 2012.
A Syrian man mourns the death of his father, who was killed during a government attack in Aleppo on October 10, 2012.
A rebel fighter is carried by his friends and laid on a gurney to be treated for gunshot wounds sustained during heavy battles with government forces in Aleppo on October 1, 2012.
Syrian rebels help a wounded comrade to an Aleppo hospital after he was injured in a Syrian army strike on September 18, 2012.
Free Syria Army fighters are reflected in a mirror they use to see a Syrian Army post only 50 meters away in Aleppo on September 16, 2012.
A Syrian man carrying grocery bags tries to dodge sniper fire as he runs through an alley near a checkpoint manned by the Free Syria Army in Aleppo on September 14, 2012.
A woman walks past a destroyed building in Aleppo on September 13, 2012.
Free Syrian Army fighters battle during street fighting against Syrian army soldiers in Aleppo on September 8, 2012.
A Syrian man wounded by shelling sits on a chair outside a closed shop in Aleppo on September 4, 2012.
A woman sits in her wheelchair next to her house, damaged by a Syrian air raid, near Homs on August 26, 2012.
Members of the Free Syrian Army clash with Syrian army soliders in Aleppo's Saif al-Dawla district on August 22, 2012.
A man mourns in front of a field hospital on August 21, 2012 in Aleppo.
Wounded civilians wait in a field hospital after an air strike on August 21, 2012 in Aleppo.
People pray during the funeral of a Free Syrian Army fighter, Amar Ali Amero, on August 21, 2012.
A man cries near the graves of his two children killed during a recent Syrian airstrike in Azaz on August 20, 2012.
A Syrian woman holds her dead baby as she screams upon seeing her husband's body being covered following an airstrike by regime forces on the town of Azaz on August 15, 2012.
A Syrian rebel runs in a street of Selehattin during an attack on the municipal building on July 23, 2012.
Syrian rebels hunt for snipers after attacking the municipality building in the city center of Selehattin on July 23, 2012.
Members of the Free Syrian Army's Mugaweer (commandos) Brigade pay their respects in a cemetery on May 12, 2012 in Qusayr.
Syrian rebels take position near Qusayr on May 10, 2012.
A Free Syrian Army member takes cover in underground caves in Sarmin on April 9, 2012.
Rebels prepare to engage government tanks that advanced into Saraquib on April 9, 2012.
Men say prayers during a ceremony in Binnish on April 9, 2012.
A young boy plays with a toy gun in Binnish on April 9, 2012.
A Free Syrian Army rebel mounts his horse in the Al-Shatouria village near the Turkish border in northwestern Syria on March 16, 2012, a year after the uprising began.
Syrian refugees walk across a field before crossing into Turkey on March 14, 2012.
A rebel takes position in Al-Qsair on January 27, 2012.
A protester in Homs throws a tear gas bomb back towards security forces, on December 27, 2011.
A man stands under a giant Syrian flag outside the Umayyad Mosque in Damascus on December 24, 2011.
A member of the Free Syrian Army looks out over a valley in the village of Ain al-Baida on December 15, 2011.
Members of the Free Syrian Army stand in an valley near the village of Ain al-Baida, close to the Turkish border, on December 15, 2011.
Displaced Syrian refugees walk through an orchard adjacent to Syria's northern border with Turkey on June 14, 2011, near Khirbet al-Jouz.
A Syrian man holds up a portrait of President Bashar al-Assad during a rally to show support for the president in Damascus on April 30, 2011.
Syrians rally to show their support for President Bashar al-Assad in Damascus on April 30, 2011.
A screen grab from YouTube shows thick smoke rising above as Syrian anti-government protesters demonstrate in Moaret Al-Noman on April 29, 2011.
A screen grab from YouTube shows Syrian anti-government protesters run for cover from tear gas fired by security forces in Damascus on April 29, 2011, during the "Day of Rage" demonstrations called by activists to put pressure on al-Assad.
A woman sits by the hospital bed of a man allegedly injured when an armed group seized rooftops in Latakia on March 27, 2011, and opened fire at passers-by, citizens and security forces personnel according to official sources.
Syrians wave their national flag and hold portraits of al-Assad during a rally to show their support for their leader in Damascus on March 29, 2011.
Syrian protesters chant slogans in support of al-Assad during a rally in Damascus on March 25, 2011.
Two Syrian refugees sit on a street in Beirut on September 18.
Young Syrian refugees sit with their father as he prepares coffee to sell on a street in Beirut on September 18.
A Syrian refugee boy practices taekwondo at Zaatari refugee camp, near Mafraq, Jordan, on Tuesday, September 17.
A young Syrian girl washes a pan at the Atme refugee camp along the Turkish border on September 17.
Syrian refugee children watch Korean and Syrian taekwondo instructors during training at the Zaatari refugee camp in Jordan on September 17.
A Syrian woman carries her baby across the border into Turkey at the Cilvegozu border gate in Reyhanli, Hatay, Turkey, on Thursday, September 12.
A Syrian girl stands with her mother in a makeshift tent as they wait to enter an official refugee camp at the Oncupinar border gate in Kilis, Turkey, on September 12.
A Syrian girl eats a tomato at a temporary refugee camp in the eastern Lebanese town of al-Faour in the Bekaa valley on Wednesday, September 11.
A Syrian refugee girl drinks water from a hose near a temporary refugee camp in an eastern Lebanese town on Wednesday, September 11.
Lower Saxony's Commissioner for Migration and Participation Doris Schroeder-Koempf, along with German Interior Minister Hans-Peter Friedrich, center, greet the first of many Syrian refugees that have been granted temporary asylum in Germany on September 11.
A refugee boy sits on the ground at a temporary refugee camp in the eastern Lebanese town of Al-Faour, Bekaa, on September 11.
Syrian refugee children run near their tents at a temporary refugee camp near the Lebanese border with Syria on September 11.
Mustafa Abu Bekir, who was wounded while fighting with the Free Syrian Army, smiles as he meets relatives after crossing the Cilvegozu gate border in Turkey's Hatay province on Monday, September 9.
A Syrian refugee family of 26 people shares one room in the Eminonu district in Istanbul, Turkey, on September 9. The family fled Syria seven months ago.
Two Syrian refugee children sit outside a house where they currently live in Istanbul on September 9.
A refugee money-changer exchanges currency at the main market at the Zaatari refugee camp near the Jordanian city of Mafraq on Sunday, September 8.
A woman from an Alawite neighborhood in Syria holds her son on September 8 at the Pir Sultan Abdal foundation in Istanbul, which belongs to the Turkish Alawite community. Around 2000 Syrian Alawite refugees came to Istanbul in recent months to escape violence in North Syria.
A Syrian refugee displays second-hand shoes for sale at the main market at the Zaatari Refugee Camp close to the Jordanian city of Mafraq, near the border with Syria, on September 8.
Syrian refugees arrive at the Pir Sultan Abdal foundation in Istanbul on September 8.
Syrian refugee workers fix cart wheels at their shop at the Zaatari Refugee Camp on September 8. Jordan has 515,000 registered Syrian refugees.
A Syrian boy sits beside his family's belongings on Friday, September 6, as they wait for a vehicle to pick them up after entering Turkey from the Turkish border gate of Cilvegozu.
Syrian refugees who failed to find shelters in a refugee camp eat and rest by the side of a road a few meters away from the Turkish-Syrian border on Thursday, September 5.
Syrian refugees arrive at the Turkish border gate of Cilvegozu on Thursday, September 5.
Syrian refugees gather in the village of Salkin after crossing the Syrian-Turkish border on September 5.
A young Syrian refugee boy sells canned tuna and other food items in the Zaatari Refugee Camp on September 4.
Children run past tents at a Syrian refugee camp in Yayladagi, Turkey, on September 3.
A child pulls a suitcase as Syrian refugees arrive at the Cilvegozu crossing gate of Reyhanli in Turkey's Hatay province on Saturday, August 31.
A family arrives from Syria at the Zaatari refugee camp in Jordan on Friday, August 30.
A Syrian girl stands behind a fence at Bulgaria's shelter near Lyubimets on August 28. More than 3,100 immigrants -- half of them Syrians -- have crossed into Bulgaria from neighboring Turkey this year, doubling their numbers compared with 2012 and and causing Bulgaria's few temporary accommodation facilities to overflow.
A wounded Syrian child is treated at the Israeli Ziv hospital on Wednesday, August 28, in the northern town of Safed, Israel. About 140 wounded Syrians, who have been fighting across the border from Israel, have been treated in Israeli hospitals since the beginning of the Syrian Civil war.
A Syrian-Kurdish man carries a mattress at sunset at the Quru Gusik refugee camp, east of Arbil, the capital of the autonomous Kurdish region of northern Iraq, on Tuesday, August 27. More than 50,000 Syrian refugees have crossed into Iraq's Kurdish region in less than two weeks as authorities rush to house them in more permanent camps.
Syrian refugees listen to safety instructions at the Quru Gusik refugee camp on Saturday, August 24.
Syrian refugees at the Zaatari refugee camp on Thursday, July 18, near the Jordanian city of Mafraq, near the Jordanian-Syrian border.
The expanse of the Zaatari refugee camp in Jordan as seen from an aerial view on July 18. The camp was opened on July 28, 2012, and is home to more than 130,000 refugees.
Syrian refugee children walk in the Bab al-Salam refugee camp in Syria's northern city of Azaz on Monday, July 15.
A boy walks with jugs of water on June 27 in a neighborhood in Beirut, Lebanon, with a high concentration of Syrian refugees. Since January, the number of Syrian refugees in Lebanon has more than tripled.
Syrian refugees stand with their belongings on June 20, World Refugee Day, at Zaatari refugee camp in Jordan.
A Syrian woman and child look out of a refugee camp window on June 20 in Alman, Lebanon, after fleeing their hometown in Idlib province, Syria.
A child, whose family fled violence in Syria, stands at the Arsal refugee camp on June 14 in Lebanon's Bekaa Valley.
A woman uses a fence at the Domiz refugee camp near Kohuk, Iraq, to dry laundry on May 29.
A boy carries a jug for water at the Maliber al-Salam refugee camp on April 28. The camp, located near the Turkish boarder, houses internally displaced Syrian families.
A makeshift refugee camp is seen near Syria's border with Turkey.
Row after row of temporary shelters fill the Maiber al-Salam refugee camp in Syria's Aleppo province, near the Turkish border on April 17.
Refugees fleeing the conflict in Syria arrive February 18 at the Jordanian border.
A Syrian girl stands at the entrance of a makeshift home near ruins in the ancient city of Serjilla in northwestern Syria on February 11. About half of Syria's refugees are children.
More than 400,000 people have fled Syria this year to countries including Lebanon, Jordan, Turkey, Iraq and Egypt. The Zaatari refugee camp is in Jordan, near the Syrian border.
A refugee collects apples and some bread February 10 at the Azaz refugee camp along the Syrian-Turkish border. Turkey has spent more than $600 million setting up 17 refugee camps, with more under construction.
Clothes dry at the Qah refugee camp near the Turkish border on January 31. Many Syrians are forced to flee with few or no belongings.
A man shows off his pet birds as new Syrian refugees arrive at the International Organization for Migration at the Zaatari refugee camp on January 30.
A refugee child gets a haircut at a makeshift barbershop at the Azaz refugee camp on February 19.
Syrian children gather around women washing in the Zaatari refugee camp on January 31.
A refugee visits a clinic with his child at the Azaz refugee camp on February 10.
Syrians put up tents at the Zaatari refugee camp on January 30.
The U.N. High Commissioner for Refugees supplied tents in Al-Marj, in the eastern Lebanese Bekaa Valley. Some families have endured frigid weather in tent camps or struggle to pay for shelter.
A Syrian girl looks through the window of a bus where she has lived with her family for the past eight months at a refugee camp in Bab al-Salam on the Syria-Turkey border on February 28.
A Syrian jumps across the border between the Syrian town of Ras al-Ain and Ceylanpinar in Turkey's Sanliurfa province on November 10, 2012.
A Syrian refugee waits November 27, 2012, at a hairdresser's shop, where refugees can also receive training, inside the Oncupinar camp in Kilis, southern Turkey.
A Syrian boy attends school in the Turkish town of Kilis on December 17, 2012.
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